Combination working barrel and sand trap



Sept. 11, 19.28.

E. L. BOYD ET Al.A

COMBINATION WORKING BARREL AND SAND TRAP Filed Oct.

Sept. 11`, 1928.

1,684,295 E. l.. BOYD ET AL COMBINATION WORKNG BARREL AND SAND TRAPFiled Oct. 18. 1927 2 Sheets-Sheet 2 1 "w I, l I l 23 I a M s v ,I S x l21.-? "ao //AIIMl l n x/,A E. L; Boggs/vrom rfohnson d v *A y 11b BY c Nso /cawi ATTORNEY.

Patented Sept. 11, 1928i.

UNITED STATES FTEN'E OFFICE.

ELTON L. :BOYD .AND JAMES T. JOHNSON, GF HALDTO, OKLAHOMA.

COMIIBINA'IIONv WORKING BAR-REL AND .SAND TRAP.

v.Applicationfilled October 18, 1927. Serial No. 22,893.

The object of the `invention is primarily to modify the conventionalworking barrel employed in oil wells, so that provision may be made fortrapping'the sand which attends the pumping or raising of the oil toprevent it, as far as possible, from reaching the standing andworlring'valves with its deleterious effect on the same; to provide aconstruction wherein such sand as may pass the valves may be separatedfrom the oil and deposited in a secondary orsuppleinental trap; and toprovide a construction in which it will be possible, without pulling thevalves, to dischargeand thoroughly clean such supplemental trapperiodically, so that the pumping operation, once started, may be madesubstantially continuous. Y

lVith this'object in view, the invention consists in a construction .andcombination of parts of which a preferred embodiment is illustrated in'the accompanying drawing, wherein:

Figure 1 is a central vertical sectional view through 'the invention.

Figure 2 is an enlarged vertical sectional view `on the plane indicatedby the line 2-2 of Figure 1.

Figures 3 and llare respectively transverse sectional views on 'theplanes indicated by the lines 3 3 and 4-4 of Figure l.

In the well tubing 10 is interposed an en- `'larged tube 11 ofsubstantially twice the diameter ofthe well tube; This enlarged tubecomprises two sections 11a and 11b united by a coupling 12 into thelower end of which is threaded a tubing 1d of substantially the z samediameter as the well tubing, this tube 14 being concentric Vwith thetubular section 11b but terminating short kof the lower end of thelatter. The tube 14 is open at its lower end but adjacent said end isprovided with series of perforations 15 while the tubular section 11b isprovided with perforations 16 adjacent its upper end which connects withthe coupling 12. Similarly above the coupling 12 and threadingly engagedwith the latter is a tube 17 concentric with the tubular section 11a,this tube 17 connecting with a collar 18 provided with radial spacerarms 19 engaging the interior wall of the section 11a. The space betweenthe tube 17 and the tubular section 11a defines al supplemental sandtrap.

The coupling 12 is formed with a conical seat 20 on which the lowerconical end of the latter extendino` through the central opening 28 inthe ring nut and being provided at its upper end with a head 29 engagingthe ring nut in the uppermost working position of the working valve.

Depending from the standing valve cage 21 is av guide tube 30 ofslightly greater length than the rod 27. .Y

ln the normal seated position ofthe worlring valve cage, it closes theaxial slots 31 formed in the tube 17, these slots constituting dischargeopenings for the supplemental sand trap when the valve cage is raised.

In the operation of the inventiornthe working valve is reciprocatedthrough the instrumentality of the sucker rod, the stroke of the workingvalve being slightly less than the length of the red 27. Upon eachupstroke of the working valve, the oil in the well is taken in throughthe perforations 16 and 15, entering the tube lll and thence the tube80, raising the ball valves 22 in such operation, the downstrolres ofthe working valve seating the ball valves 22. A large portion of thesand that may be contained in the oil drops by gravity through the lowerend of the tube section 111 and down through the lower end of the welltube. Such sand as may remain in the oil is carried past the workingvalve,settling into the supplemental trap defined by the tube 17 andtubular section 11a. After a specified interval when it is assumed thatthe supplemental trap has received enough sand to make necessary itsdis-A charge, the sucker rod is drawn up four or five feet above thenorma-l stroke, this operation resulting in the valve cage 21-beinglifted from its seatbecause ofthe engagement of the ring nut with thehead 29k of the rod 27. The weight of the oil above the sand will thenresult in the ejection of the latter through the slots 31 and into thetube 1d from which it drops to the bottom of the well. The lowering ofthe sucker rod will then'permit the valve cage 21 to return to itsseat-20, the tube 30 acting as a pilot seat. Y The invention having beendescribed, what is claimed as new and useful is: y Y

l. Apparatus for the purpose indicate comprising concentric tubularmembers of which the intervening space between the two constitutes asand trap, a working valve operating in the inner tubular member, abodily movable standing valve of which the body portion in one positioncloses openings of communication between said sand trap and the interiorof the inner tubular member, and operative connections between theworking valve and the body portion of the standing valve to effectmovement of said body portion only when the stroke of the standing valveeX- ceeds its normal stroke.

2. Apparatus for the purpose indicated comprising concentric tubularmembers of which the intervening space between the two constitutes asand trap, a working valve operating in the inner tubular member, abodily movable standing valve of which the body portion in one positioncloses openings of communication between said sand trap and the interiorof the inner tubular member, operative connections between the workingvalve and the body portion of the standing valve to effect movement ofsaid body portion only when the stroke of the standing valve exceeds itsnormal stroke, and a guide tube on the body portion of the standingvalve.

3. Apparatus for the purpose indicated comprising concentric tubularmembers of which vthe intervening space between the two constitutes asand trap, a coupling at the lower ends ot' said members and having avalve seat, a standing valve comprising cage and valve members of whichthe former engages a seat formed in said coupling, the inner tubularmember having openings adjacent said coupling effecting communicationbetwen its interior and said sand trap, a workguiding the cage to itsing valve operating in the inner tubular member, and operativeconnections between the working valve and said cage member to eiectymovement of the latter only when the stroke of the standing valveexceeds its normal stroke, said cage member when seated closing saidopenings.

4. Apparatus for the purpose indicated comprising concentric tubularmembers of which the intervening space between the two constitutes asand trap, a working valve' operatingin the inner tubular member, amember disposed at the lower ends of said tubular members and having avalve seat, a working valvecomprising cage and valve members of whichthe former engages a seat formed upon said coupling, the inner tubularmembers having openings effecting communication between its interior andthe sand trap andy closed by said cage when thel latter is engaged withits seat, the working valve and said cage having cooperative slidingconnections permitting movement of the former without movement of thelatter during normal stroke, said connections interlocking to unseatthecage upon the stroke of the standing valve exceeding its normal stroke.

Apparatus for the purpose indicated comprising concentric tubularmembers of which the intervening space between the two constitutes asand trap, a working valve operating in the inner tubular member, amember disposed at the lower ends of ,said tubular members and having avalve seat, a standing valve comprising cage and valve members of awhich the former engages a seat formed upon said coupling, the innertubular members having openings effecting communication between itsinterior and the sand trap and closed by said cage when the latter isengaged with its seat, said rcage having an upstanding rod within saidtubular member and terminating in a head and the working valve havingdepending tubular extensions closed at its lowe'r end with a ring nuthaving an opening formed therein of greater diameter than said rod butof less diameter than said head, the ring nut being in surroundingrelation to said rod.

In testimony whereof they afiix their signatures.

ELTON L. BOYD. JAMES T. JOHNSON.

